Voltammetry and Coulometry with Immersed Thin Layer Electrodes. Part 1. Model for Effects of Solution Resistivity in Linear Sweep Voltammetry.
Abstract
In non-aqueous solvent/electrolyte systems, solution resistivities as high as 3000 ohm-cm may be encountered. The resulting potential distribution problems are particularly severe, and it was suggested that implementation of thin layer methodology, even in solvents of relatively high dielectric constant, such as acetonitrile or dimethylformamide, would be difficult. It is in such poorly conducting media that the advantages of thin-layer methodology may often be most beneficial, however. In this paper the application of thin layer voltammetry in non-aqueous media is considered. The discussion is centered around immersed thin layer electrodes, i.e. those in which the edges of the thin layer cavity are immersed in bulk solution, since a greater cross sectional area is available for the flow of current, and the resulting potential distribution is therefore less severe. Such cell designs always suffer to some extent from diffusion of electroactive material from the bulk solution into the thin layer cavity, but it will be demonstrated experimentally that this does not seriously affect the usefulness of results.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 28, 1984
- Accession Number
- ADA148655
Entities
People
- A. S. Hinman
- J. Cassidy
- Stanley Pons
Organizations
- University of Utah